Type-writing machine



(No Model.) v 3 Sheets-Sheet 1.

S. A. DEAN. TYPE WRITING MAGHINE Patented Nov. 24,' 1891.

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S. A. DEAN.

TYPE WRmNG MACHINE.

No.`463,968. Patented Nov. 24, 1891.'

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(No Model.) 8 Sheets-Sheet 3.

S. A.' DEAN. TYPE WRITING MACHINE.

No. 463,968. l Patented Nov. 24,1891.

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SEIVARD A. DEAN, OF BUFFALO, MINNESOTA.

TYPE-WRITING'MACHINE.

SPECIFICATION forming part of Letters Patent No. 463,968, dated November24, 1891.

Application filed September 5, 1890- Serial No. 364,025. (No model.)

T0 all whom zit may concern,.-

Be it known that I, SEWARD A. DEAN, of Buffalo, in the county of Vrightand State of Minnesota, have invented certain Improvements inType-VVriting Machines for Writing in Books, of which the following is aspecification.

My invention relates to means designed particularly for makingtype-written entries in books, the object of the invention being toprovide a type-writer mechanism by means ot' which deeds, assignments,or other instruments may be rapidly and easily written in largerecord-books-such, for example, as are employed for registering deeds orother instruments-although the invention is applicable also for writingin smaller books or upon detached sheets of paper or upon tab-- lets.

My invention consists, iirst, in a novel support for the book which willreceive and automatically bring the book into a firm dat po` sitionready to receive the impression from the type-writer; second, in meansfor supporting the type writer independently of the book-support,whereby it will be capable of writing upon the pages of the book or uponpaperarranged beneath the type-writer upon the book or paper support,and at the same time will permit the type-writer to be readily andquickly moved away from over the surface of the book, so as to permitthe leaves of the book to be turned or the1natter Written in the book tobe read or any corrections or changes in the written matter to be made;third, in special means whereby the movable support or tab-1e and thetype-writer may be given the proper movements to properly space andalign the printing, and, fourth, in certain details of construction andcombination hereinafter described, and particularly pointed out in theclaims.

In the accompanying drawings, forming a part ot this specification,Figure 1 is a sectional side elevation illustrating a type-writer andsupporting-table embodying myI invention. Fig. 2 is a plan view of thesame. Fig. 3 is an end elevation of the movable supportingtable, showinga book in position thereon. Fig. et is a detail plan view of theswinging type-arms. Fig. 5 is a sectional detail showing the manner ofpivotally securing said arms one above the other in such manner as notto interfere with one another. Fig. 6 is a detail end elevation o f thetype-writer, showing the angle-pieces th rough the medium ot' which saidtype-arms are operated by the keys. Fig. 7 is a detail plan view showingmeans for disengaging the catch from the ratchet-wheel upon thespring-arbor when it 6o it is desired tomove the carriage to the left orright across the page. Fig. 8 is an elevation of the same. Fig. 9 is adetail showing the rack-and-pawl device constituting the line-feed. Fig.10 is a plan view from be- 65 neath of the several pawls of diiferentlengths adapted to engage said rack. Fig. 11 shows two views of theroller-wheels upon which the type-writer carriage is adapted to move Aover suitable stationary tracks. Fig. 12 is a 7o detail view showing thearrangement of the ink-ribbon rolls and means of reversing the same.

vLike parts are indicated by the same numorals throughout the differentfigures of the drawings.

As shown in Figs. 1, 2, and 3 of the drawings, the movable support ortable consists of the base-frame 2, having the cross-pieces 3 and 4, andthe forward upright 5, extending 8o clear across the base-frame 2, andprovided y with the plate 6, having the upturned end 7.

This base 2 is providedwith the strips 8 andlfff` Il 9, secured to theunder surface thereof at the'lV f forward and rear ends of the saine,and 35. adapted to slide upon the track 10, extending forward from therear end of the desk, and provided with the stops 1l at each end adaptedto limit the travel of the book-support or table. 9o

In the use to which I have adapted my table--that is, with books it isnecessarythat the table should be made in two sections 12 and 13. Thesesections or plates 12 and 13 are independently supported byv a set ofspring-brackets 15 and 16, placed at the opposite ends of each plate,respectively, and pivotally connected to the same by 4means of the eyesor bearings 17 and 18. These brackets, with the plates, are normallyheld in posiroo tion shown in Fig. 1 by the coiled springs 19 engagingwith said brackets 15 and 16, as shown. Ithus provide two plates,whichmay be pressed down toward the base independently of each other,audwhich will at any height occupy planes parallel with the plane of thebase. Thus, as shown, a book 20 may be placed upon the plates, one coveron each, and the book opened at any page and still be left iat upon theupper surface, for if one side be thicker than the other the platebeneath the same will sink down far enough to accommodate it beneath theroll 21, permanently secured in suitable bearings 22. The bearings 22are in turn secured to the stationary frame of the desk upon which thebook type-writer is to be used.

I have shown the plate 6 merely as a precaution providedagainstitheloosening of the plates 12 and 13 when the table is removedfrom beneath the roll 21, as is sometimes done. So far, however, asconfining the book to be written upon is concerned, the roll 2l is allthat is necessary, as this will keep the upper surface of the book atall times level. Now as each line is written it becomes necessary tomove the table forward the distance of one space, and in order toadvance the table just this required distance of one space, I providethe rack-and-pawl device shown in Figs. l, 9, and l0. The rack-rod 23 isprovided with the teeth 24, extending as far forward as it is wished tomove the table. The rod 23 is adapted to move in suitable guides 25 and26 placed at its rear and forward ends, respectively, and is providedwith the foot 27, against which the coiled spring 28, extending from theanglepiece 29, is adapted to press the ratchet-bar back. The pawls 30are pivoted within the shield 3l, secured upon the crosspiece 3, and areadapted to engageanotch of the rack to prevent the table from beingmoved back. The forward end of this rackbar 23 is also provided with anangle-piece 32, through which is inserted the screw 33, adapted to serveas an adjustable stop. lVhen it is desired to move the table forward thedistance equal to the space between two lines, the rack-bar 23 is pushedin by pressing on the head of the screw 33 until the end of the screwcomes in contact with the stop-block 34 fixed upon the table. As this isdone the table bearing the book is pushed through under the roll 2l. Therod 23 will then be released and will be immediately pushed back to itsoriginal position by the spring 28, while the table will be held inposition by the pressure of the plates against the roll 21. The pawlswill slide over the ratchets or teeth freely as the bar is pushed backby the spring. 7e will now say that the table has been fed forward inthis way line by line until it has reached its forward position againstthe stops 1l upon the forward ends of the track-rails 10, or, in otherwords, until the bottom of the page has been reached. It is nownecessary to draw the table back in order to start again at the top ofthe page and to turn overa leaf of the book. This turning of the leafwill be accomplished by removing the book from beneath the roll 21, thebook remaining supported upon the book support or table, and

the leaf or leaves may be turned without removing the book therefrom,and the book may then be pushed back under the roll, when it will bebrought into proper position by the automatic action of the springsupported plates forming the table or support. The table may be easilymoved back by disengaging the pawl or pawls from the rack by means 0fthe small lever 35, connected with the tripping-plate 30, by which thepawls may be raised in their upper position and held away from the rack.

As so far described the table included within my invention might be usedas a simple means for holding a book in a perfectly fiat position to bewritten upon in the ordinary manner. In this case, however, the feeddevice would be dispensed with.

The type-writer which I have devised for use in connection with mymovable table isshown in the various figures of the drawings to consistin suitable swinging type-arms, provided with suitable type-pieces andadapted to move in horizontal planes and in means whereby these typepieces may be brought one at a time beneath a vertically-operatinghammer, adapted to press the same against a suitable inked ribbon andthe paper beneath the same. As shown in Figs. 1 and 2, I provide therear track 3G, supported upon the frame of the desk and upon which thecarriage 3 7 is adapted to move on grooved roller-wheels 33 provided insaid carriage. 4At the forward end I provide a similar track 39 androlls, and also in this place a rack 40, with whicha suitable gear-wheel41, secured upon the movable frame of the type-writer, is adapted toengage. rihis gear-wheel is connected with the escapement device whichis provided upon the type-writer and adapted to operate each time akey-bar or the space-bar is struck by the operator. Any suitable meansmay be employed for moving the carriage along-s uch as a spring securedupon the desk in line with the rack 40 and connected with the frame ofthe carriage-or a coiled spring constantly tending to rotate the shaft,attached to said gear-wheel 41,01' a simple weight passing over asuitable pulley and connected by a cord with the frame of the machine,the only requisite of such a device being that the tension of the sameas applied to the carriage and tending to move the same to the rightshall be practically constant.

' The carriage of the type-writer machine is preferably curved and bentinto the shape shown in Fig. 1, in order that all of the pivots orshafts may be accommodated with simple bearings in the frame. Theforward ends of the frame are bent upwardly and curved outwardly at 44,so as to bring the frame into line with the shaft 45 and the gear-wheel41, beneath which the rack 40 is provided in connection with the track39, secured to the sta tionary part of the desk. The shaft 45 extendsbackward through the cross-piece 46, and is provided with themiter-gear47, adapt- IOO IIO

ed to engage with a similar whee148,secured upon the shaft 49, adaptedto rotate in suitable bearings provided in the ears 50, extend l to theshaft 49, having its outer end secured upon the frame of the machine orsome xed part thereof. This spring is held in position by the shields 53placed one on either side of the same, and is adapted to exert its forceto constantly tend to rotate the shaft 49 in the direction shown by thearrow in Fig. l, and thus through the medium of the miter-gear to rotatethe gear-wheel 41,'engaging with the rack 40, and move the carriage tothe right along .the ways 36 and 39. The constant rotation of the shafts49 and 45 is prevented by means of the ratchet-wheel 54, secured uponthe shaft 49, and the catch 55 adapted to engage therewith, as shown,and to be normally held in the position shown by the tension of thespring 52, which tends to rotate the-wheel 54 and thus normally hold thecatch 55 back and bring the stop 56 upon the catch-rod 57 against thecross-piece 46, as shown. This ro'd 57, with the catch 55, is adapted tomove up and down in the slot 58, provided inl the cross-piece 46, asshown most clearly in Fig. 8, and the stop 55 is of such length as toalways engage with the cross-piece at any height to which the rod 57 maybe raised. Pivoted to the rod 57 at 59 is the arm 60, secured upon theshaft 6l, upon which the hammer 62 is also secured. Thus as the catchengages with the ratchet-wheel 54 and is drawn into the position shownby the tension of this spring, the hammer 62 will be raised into itsupper position, as shown in Fig. l. The coiled springs 63 wound aroundthe shaft 6l andhaving their lower ends secured in the frame of themachine are secured also to the hammer 62, as shown at 64, and areadapted to force the same down when the catch 55 with the rod 57 isreleased from engagement with the ratchet-wheel 54. This catch 55 isadapted to be released each time aletter-key 65 or the space-bar 66 isstruck, for as the key-bar 67 is pressed down through the medium of thekey-plate 65 the outer end 68 of the bar is brought up against thecross-bar 69, which bears the toothed piece 70, adapted to engage withthe under notches of the wheel 54 just as the catch 55 is driven awayfrom the upper portion thereof by the adjustable screw 7l, provided inthe forward end of the piece 70and forcibly brought up against the bar57 when the letter-key is pressed down. The forward end of the space-bar66 has a similar form to the bar 67 and in the same manner engages withthe cross-piece 69. Hence the spaces between words are made by merelypressing down the space-bar 66. Each time the space-bar or theletter-bars 67 are pressed down the catch 55 is moved up, so as to justpass the end of the tooth upon the wheel 54, thus allowingthe same topass from under it. The catch 55 is then immediately forced back intothe next notch by the flat spring 72 provided above the same. As thecatch 55 drops back, owing to the tension of the coiled spring 63 actingupon the piece 60 and the hammer, the hammerwill be forced or snappedquickly down, so as to bring the lower end thereof forcibly against thetype beneath the same. The hammer is prevented from going too far down,and thus moving the catch more than one space from the ratchet-wheel 54,by the fixed stop 73. Now as each key-bar provided with an adjustableset-screw 75 is forced down the set` screw is carried against the plate76 situated beneath the same and adapted to swing upon suitable arms 77,pivoted to the shaft 78, rigidly secured in the carriage-frame. Theplate 76 is provided with the downwardly-projecting angle 79, the innerend of which is cut off at an angle, as shown in Fig. 6, against whichthe small roller 80 presses. This roller 8O is secured upon the swingingtype-arms 8l, as shown in Fig. 4, and is adapted to rotate freely insuitable bearings 82, provided thereon. Upon this type-arln 8l and asimilar arm 86 are secured the types 83, secured thereon by the flatsprings 84, extending from the cross-pieces 85, formed upon the ends ofthe bars 81. The bar 86 is provided with a similar roller 87. These twobars are normally held apart and against the rubber stops 88 and 89 uponthe circle-bar 90 by the small spring 91 placed between the rear ends ofthe arms 8l and 86. A suitable circular guide and support 92 is providedbeneath the ends of the arms 8l and 86 to prevent the same from beingforced down below their normal levels. These arms 8l and 86 are pivotedupon a stud 93 of the form shown in Fig. 5, and are entirely free of anyengagement with each other. As the plate 76 and the angleplate 79 isforced down the angle end thereof is brought against the roller 80, andas the roller cannot move down, owing to the -fact that the rear end ofthe bar is supportedby the circle 92, the arm 8l will be moved aroundupon its pivot-stud 93, andthe type brought under the hammer, which willat just that instant be released to drive the type against the inkedribbon and paper. that theroller 8O merely acts as an anti-frictiondevice. The key-levers will now, be released and will be immediatelydrawn up by the tension of the small spring 94, connected therewith bythe lever 95, thus leaving the plate 76 free to be movedv up into itsnormal face-piece97 upon the upright portion 98 of the frame, and arebent in any suitable way TOC IIO

It is thus seen A `I3o These bars are adapted to move up so as tocoliform with the convenient placing of the parts. The space-bar ispreferably placed in a similar slotted guide between the sets of keysupon either side of the middle lines of the carriage. The small spiralsprings 94 are adapted to hold the key-bars G7 in their upper positionthrough the medium of the pivoted levers 95 linked thereto, as shown,and engaging with a slot in the upright pins 99, upon which the coiledspring is secured, as shown. This pin has bearings in the crosspieces100 and 101, and, as will be seen, is pressed down each time that thekey-bar is struck to throw the type-arm around upon its pivot to bringthe desired type beneath the hammer. The arrangement is such that thesepins act as a stop for the bars 81 and S6, stopping the same just as thedesired t'ype comes exactly beneath the hammer, and preventing the samefrom being carried by. As shown, one of these pins is provided with eachkey-bar. The plate 7G is duplicated upon the other side of the machineih a plate 102, (shown in Fig. 1,) and upon which and with whichkey-bars and type-arms like thoseheretofore described are adapted toengage. The ribbon-plate 103 is provided with the notch 104, over whichthe type are adapted to be brought to be struck by the hammer G2. Theribbon 105 extends across the opening or notch, thus occupying aposition between the type and the paper upon the support. This ribbonextends upwardly upon the sides 103, and is wound upon suitable drums106, adapted to rotate in suitable bearings provided as shown. Thesedrums are provided with the small pulleys 107 upon the forward end ofthe shaft, which are adapted to engage with a suitable ratchet-pulley108 upon the shaft by means of a small belt 100. This pulley 108 isadapted to move with the shaft 45 only when the same is rotated to movethe carriage forward. Any backward movement of the same will not affectthe pulley 10S, as it is loose upon said shai't 15, being only connectedtherewith by a suitable pand-andratchet device, and thus the ribbon willnot be loosened upon the drums. The plate 103 and its upright arms isadapted to swing upon a suitable pivot 110 in the frame. The linkrod 111is connected with the plate 103 upon either side thereof, and bypressing up upon the linger-lever 112 connected therewith by theangle-pieces 113, one of which is placed at either end of the shaft 11i,upon which the lever 112 is secured, the plate 103 may be drawn back soas to expose the line which has just been written. The connectionbetween the levers 95 and the shaft 114 is loose, so that the movementof one will not aft'ect the other. I preferably provide two rollers 115,one at either end of the carriage, and supported thereon in any suitablemanner, said rollers being adapted to engage with the under surface ofthe track 40 to prevent the carriage from jumping the track. The spring63 may be tightened so as to snap the hammer down with greater force byadj usting the upper end 110 or" the springin the notches of the notchedbars 117 secured upon the frame.

\Vhen it is desired to move the carriage to one side or the other, itbecomes necessary to disengage the catch from the ratchet-Wheel 5i. Forthis purpose I provide the thumblever 11S, pivoted upon the frame of theniachine, as shown, and limited in its swing by suitable pins 110. Bypressing down upon this lever the catch 55 and the rod 57 maybe raisedabove the teeth of the wheel 5-1, when the carriage may be pushed backagainst the tension of the spring 52.

l preferably provide several of the pawls 30 within the shield 31, thepawls being diiterent lengths, as shown, the difference in lengthbetween the longest and shortest being less than the length of one notchin the rod 23, thus making sure the accurate engagement of the movabletable with the feed-rod 23.

3y reference to Fig. 3 it will be seen that the bearings that hold theupper crossrods of the spring-brackets are so placed that the plates 12and 13 may be movedin and brought together at their inner edges, asshown in dotted lines, to form one continuous tlat plate, thus providinga smooth surface, upon which a wide sheet of paper may be placed to bewritten upon. I sometimes provide small cross-rollers coincident withthe upper surfaces of the plates and parallel with the roller 21, theoiiice ot' these rollers being to make easy the insertion and removal ofthe book, which may be quite heavy.

The tracks 30 and 30 are made of such length as to admit of the carriagebeing moved otf the book, so as to admit ot the removal of the book orthe turning ot a page thereof. The reversal of the inking-ribbon isaccomplished by throwing oil? of one of the belts 109 and 120 (shown inFig. 12) and putting on the other, whereby the rolls are made to revolvein an opposite direction. It is obvious that the coiled spring 52 willbe wound u p when the carriage is moved to the left, and, further, it isobvious that the details of construction and arrangement of parts may bevaried in many ways without altering the principle of or making adeparture from my invention.

It will be seen that the brackets by which the plates forming the booksupport or table are supported are arranged so as to give the plates aslight backward movement as they are depressed. This is of specialadvantage in placing large cumbersome books in position for writing uponthem, as the books are simply laid upon these plates with the end nearto the transverse roll 21, and are then given a downward and forwardshove orpush, which carries the book beneath the roller 21, this rollerturning to facilitate the insertion of the book. By this means the bookis readily inserted, and as it comes beneath the roller thespring-supported plates automatically ad- Just themselves to the varyingthickness oi IOO IIO

the parts of the book without any attention from the operator, the uppersurface 'of the book upon which the writing is to be made being thusautomatically brought into position to be written upon by thetype-writer. Itl will also be seen that it is not necessary to handlethe book except for the purpose of putting it in position. Vhen it isdesired to turn a leaf of the book, the type-writer may be moved to loneside and the book drawn from under the roller 21, its weight, however,remaining upon the booksupport, and as soon as the leaf is turned thebook is pushed back under the roller. This obviates the necessity ofremoving the book-support from beneath the type-writer each time theleaf is to be turned or a correction to be made. This is especiallyadvantageous in the case of large and bulky books, the frequent removalof which would severely tax the strength of the operator.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of the automaticallyadjustable andthe movable book support with a stationary roller adapted to 'hold abook upon said support flat open, suitable tracks upon which saidsupport is adapted to move, means for moving said support forward uponsaid tracks step by step, and asuitable type-writer movably supportedabove said support and adapted to print characters upon the book heldbeneath said roller and upon the support, substantially as described.

2. The combination of a suitable base adapted to slide upon suitabletracks or guides, means by which said base maybe advanced step by stepupon said guides, suit.- able spring-plates supported above said baseand adapted to move to and from the same through planes lying parallelwith said base, a suitable stationary roller secured above saidbase-plate and adapted to confine a book placed between the same andsaid plates in a fiat open position, a suitable type-writer adapted toprint upon the open page of said book, said type-writer being supportedupon suitable tracks lying parallel with said roller, whereby saidtype-writer is adapted to move laterally from side to side across thepage or pages of the book held between said roller and saidspring-plates.

3. The combination, with the base 2, of the spring-brackets 15 and 16,the plates 12 and 13, supported upon the upper ends of said brackets,for the purpose set forth.

4. The combination, with a suitable automatically-adjustable and movablebook or paper support, of a movable typewriter arranged to print lettersor characters upon a -book or paper arranged upon said support, meansfor moving said support longitudinally to provide the spaces between thelines, and means for moving the type-writerlaterally to provide thespaces between the letters or characters and words.

5. The combination,\vith the base and booksupport, of the rack-rod 23,occupying a substantially horizontal position, the adjustable stop inthe rear end thereof, the springs pushing against the forward end ofsaid rod, and the pawl or pawls 30, pivoted upon said base and adaptedto engage said rack-rod,whereby the said base with the said book orpaper support may be moved forward step by step at will, substantiallyas described.

6. The combination of the adjustable movable support, consisting in themovable base 2 and the independently-movable plates 12 and 13, pivotedupon the said base by the springbrackets 15 and 16, with a suitabletrack upon which the support 'is adapted to be moved, means for movingsaid support forward step by step, the roller 21, secured above saidplates, stationary tracks 3G and 39, and the type-writer adapted to movefrom side to side thereon across the width of said support,substantially as described.

7. The combination, with the book or paper support, of the type-writercarriage provided with the spring-hammer `62 suitably pivoted upon saidcarriage, the notched ribbon-plate 103, supported upon said carriage andadapted to hold the inked ribbon, the swinging type arm or arms pivotedupon said carriage and provided with the spring-supported types, meanswhereby said types may be successively carried around under said hammerand whereby said hammer may be successively released as the desiredtypes are brought beneath the same, and means whereby said carriage isregularly advanced across said support, substantially as described.

8. The co mbination,in a type-writer adapted for use in connection witha suitable movable support adapted to hold the paper or book in ahorizontal plane, of a suitable carriage-frame provided with suitablerollers adapted to engage the tracks 30 and 39 with the shaft 61, thespring-hammer G2, supported thereon, the plate 103, provided with thenotch across which the type-writer ribbon extends, said notch and ribbonlying beneath the forward end of said hammer, the shaft 49, providedwith the miter-gear, the rack 40, the gearwheel 41, andthe shaft 45,extending between said gear-wheel and said mitergear, the ratchet-wheel54 upon said shaft 49, the catch 55, the rod 57 provided with the'stop56 and pivoted to said hammer, the key-bars G7, provided with theset-screw 75, the levers 95, linked to the forward end of said key-bars,the pins 99, provided with the coiled spring 94, the plates 7 6 and 102,having the portions 79, the inclined inner ends of said plate 79 adaptedto engage the4 arms S1 and 86, the types provided upon the forward endyof said arms 31 and 8G and adapted to be swung over the notch 105 andbeneath said hammer, said pins 99, adapted to serve as stops to limitthe roo TIO

movement of said arms 81 and 86, means for and tripping device adaptedto move into engagement with said ratchet-wheel 541 and to trip saidcatch when either a key-bar or the space-bar is pressed down, and meansfor propellin g said carriage along said tracks toward the right,substantially as described.

9. The combination, withthe carriage-f rame described, of the type-armsS1 and 86 pivoted centrally in the frame, the small friction-rolls inthe ends of said arms, said arms being normally held out by the spring91, the circle plate or guide 90, across which the type-arms are adaptedto move, the type-arms S3, supported upon the flat springs 84, attachedto said arms, the angle-plates 7 9, having inclined ends adapted toengage the small rolls, the plates 7G and 102, adapted to engage theset-screws 75 of the key-bars, the levers 95, linked to said key-bars,said key-bars being pivoted upon the shaft 67 and said levers upon theshaft 11a1,tl1e pins 99, engaging the ends of said levers 05 andprovided with the coiled spring 94, said pins being adapted to movevertically in bearings 101 and 100 and to serve as stops for saidtype-arms when the proper letter has been brought under thespring-hammer 62, and means for releasing said hammer successively asthe desired letters are brought beneath the same.

10. The combination, with a catch-bar 57, provided with a catch 55,adapted to engage the ratchet-wheel 5i, ol the thumb-lever 118, adaptedto engage said bar 57 for the purpose of disengaging the catch 55,whereby the type-Writer carriage may be moved entirely t-o the right orleft along the tracks 3G and 39, substantially as described.

11. The combination, with the type-levers pivoted upon the shaft 67, ofthe adjustable set-screws 75, adapted to engage the plates 7 6 and 102,through the medium of which the type-carriers 81 and SG areoperated,substan tially as described.

12. The combination, with the top of the type-writer table or desk, ofthe tracks 10 provided thereon, the movable book-support adapted toslide on said tracks, the stops 11 in said track adapted to limit themovement of said support, the rack-rod 24, adapted to slide in theguides .25 and 2G, the spring 2S, the adjustable stop-screw 33, theseveral pawls 30 of different lengths, and the trippingplate adapted tobe operated by the lever 25 to disengage said pawl from the rack 24,substantially as described.

13. The combination, with suitable s1ideways or tracks, of theadjustable book-support adapted to move thereon, consisting of the base,the independently-movable plates 12 and 13, the spring-brackets 15,secured on said base by clips or hinges 18, and upon said plates byclips or hinges 17, and the springs 19, adapted to normally press saidbrackets upwardly, substantially as described.

1-1. The combination, in a self-adjusting book-support, of the base withthe independent plates 12 and 13, the rectangular brackets 15 set at anangle with the base and extending between the base and said plate andpivotally secured thereon, springs adapted to press said bracketsupwardly, the arrangement of said plates on the upper portions of saidsprings being such as to adapt the plates to be moved in close togetheror separated, substantially as described.

15. The combination, with the base, of the plates 12 and 13, thespring-brackets 15 and 16, the clips 13, clips 17, the springs 19,whereby said plates are made independently movable and adapted to moveforward and down, and a roller 2l, substantially as described.

16. The combination of the plates 12 and 13 with the base having thecross-pieces 3 and 4 and the upright 5, the plate G on said upright, andthe spring-brackets 15 and 1G, provided between said base and saidplate, said brackets extending transversely beneath said plate,substantially as and for the purpose specied.

17. The combination of a movable and automatically-adjustablebook-support, of means for holding a book thereon, means for moving saidsupport step by step to produce linespacing, a suitable type-Writerarranged above said support and adapted to print characters on a book orpaper arranged thereon, and means Afor moving said type-writer fromabove said support.

18. The combination, with a book-support adapted to automatically adjustitself to the form of a book placed thereon and to hold the same in aflat open position, of tracks arranged above said support, a type-writerarranged above said support and upon said tracks and adapted to be movedupon the same away from above said support, whereby free access maybehad to the support and the book thereon.

19. The combination, with an automatically adjustable and movable booksupport, of means for advancing said support step by step, said supportadapted to receive a book or paper and to hold the upper surface of thesame in a level dat position, tracks arranged above said support, atype-writer adapted to print characters upon said book or paper and adapted to be moved laterally upon said tracks and across said supports,means for moving said type-writer step by step to space the letters andwords, said tracks being longer than the width of said support and saidtype-Writer adapted to be moved thereon to one side and from above saidsupport, substantially as described.

20. The combination, with an automatically-adj ustable spring-supportedtwo-part booksupport and means for holding a book there on, of atype-writer arranged above said support and adapted to print characterson abook arranged upon said support.

21. The combination, with a book-support consisting of independentspring-supported IOO IIO

plates, and a transverse roller above saidsup- In testimony whereof Ihave hereunto set port, against which a book is adapted to be my handthis 22d day of August, 1890. pressed by said book-support, of atype-Writer arranged above said support, adapted to print- SEVARD A.DEAN. 5 characters on a book or paper arranged there- In presence ofon,and means for moving said typewriter A. M. GASKILL,

from above said support. C. G. HAWLEY.

